for i=1:length(Circuit)
    temp=Circuit{i};
    if (size(temp,2) == 23)
        disp( [ ' adding ampa gain to Circuit {' num2str(i) '}!'] );
        temp(:,19:24)=temp(:,18:23);
        temp{1,18}='ampa_gain';
        for j=2:size(temp,1)
            temp{j,18}=1;
        end
        Circuit{i}=temp;
    end
end